/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/ShapeApproximation/MeshSimpleShapeApproximation.h
Calculate Projected Convex Hulls for each input mesh and store in ShapeSetOut. A Projected Hull is computed by first projecting all the mesh vertices to a plane, computing a 2D convex hull polygon, and then sweeping the polygon in 3D to contain all the mesh vertices. The 2D convex hull polygons are optionally simplified if bSimplifyHulls=true.
void Generate_ProjectedHulls ( [FSimpleShapeSet3d](API\Plugins\DynamicMesh\ShapeApproximation\FSimpleShapeSet3d) & ShapeSetOut, [EProjectedHullAxisMode](API\Plugins\DynamicMesh\ShapeApproximation\FMeshSimpleShapeApproximation\EProjectedHullAx-) AxisMode )